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states a repeated observation by nature; may be changed when observations are made that are not consistent with predictions
is a representation of an object or event that can be studied to understand the real object or event.
used by scientists to represent real situations and make predictions in a variety of applications
critical thinking used to solve scientific problems; Approaches taken to try & solve a problem ; can include recognizing the problem , forming a hypothesis, testing the hypothesis, analyzing the data, and drawing conclusions
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